diff options
Diffstat (limited to 'drivers/net/wireless/b43/debugfs.c')
| -rw-r--r-- | drivers/net/wireless/b43/debugfs.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43/debugfs.c b/drivers/net/wireless/b43/debugfs.c index 9cdd9eca082..dd40ad826c7 100644 --- a/drivers/net/wireless/b43/debugfs.c +++ b/drivers/net/wireless/b43/debugfs.c @@ -74,6 +74,168 @@ struct b43_dfs_file * fops_to_dfs_file(struct b43_wldev *dev, } while (0) +/* The biggest address values for SHM access from the debugfs files. */ +#define B43_MAX_SHM_ROUTING 4 +#define B43_MAX_SHM_ADDR 0xFFFF + +static ssize_t shm16read__read_file(struct b43_wldev *dev, + char *buf, size_t bufsize) +{ + ssize_t count = 0; + unsigned int routing, addr; + u16 val; + + routing = dev->dfsentry->shm16read_routing_next; + addr = dev->dfsentry->shm16read_addr_next; + if ((routing > B43_MAX_SHM_ROUTING) || + (addr > B43_MAX_SHM_ADDR)) + return -EDESTADDRREQ; + + val = b43_shm_read16(dev, routing, addr); + fappend("0x%04X\n", val); + + return count; +} + +static int shm16read__write_file(struct b43_wldev *dev, + const char *buf, size_t count) +{ + unsigned int routing, addr; + int res; + + res = sscanf(buf, "0x%X 0x%X", &routing, &addr); + if (res != 2) + return -EINVAL; + if (routing > B43_MAX_SHM_ROUTING) + return -EADDRNOTAVAIL; + if (addr > B43_MAX_SHM_ADDR) + return -EADDRNOTAVAIL; + if (routing == B43_SHM_SHARED) { + if ((addr % 2) != 0) + return -EADDRNOTAVAIL; + } + + dev->dfsentry->shm16read_routing_next = routing; + dev->dfsentry->shm16read_addr_next = addr; + + return 0; +} + +static int shm16write__write_file(struct b43_wldev *dev, + const char *buf, size_t count) +{ + unsigned int routing, addr, mask, set; + u16 val; + int res; + unsigned long flags; + + res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X", + &routing, &addr, &mask, &set); + if (res != 4) + return -EINVAL; + if (routing > B43_MAX_SHM_ROUTING) + return -EADDRNOTAVAIL; + if (addr > B43_MAX_SHM_ADDR) + return -EADDRNOTAVAIL; + if (routing == B43_SHM_SHARED) { + if ((addr % 2) != 0) + return -EADDRNOTAVAIL; + } + if ((mask > 0xFFFF) || (set > 0xFFFF)) + return -E2BIG; + + spin_lock_irqsave(&dev->wl->shm_lock, flags); + if (mask == 0) + val = 0; + else + val = __b43_shm_read16(dev, routing, addr); + val &= mask; + val |= set; + __b43_shm_write16(dev, routing, addr, val); + spin_unlock_irqrestore(&dev->wl->shm_lock, flags); + + return 0; +} + +static ssize_t shm32read__read_file(struct b43_wldev *dev, + char *buf, size_t bufsize) +{ + ssize_t count = 0; + unsigned int routing, addr; + u32 val; + + routing = dev->dfsentry->shm32read_routing_next; + addr = dev->dfsentry->shm32read_addr_next; + if ((routing > B43_MAX_SHM_ROUTING) || + (addr > B43_MAX_SHM_ADDR)) + return -EDESTADDRREQ; + + val = b43_shm_read32(dev, routing, addr); + fappend("0x%08X\n", val); + + return count; +} + +static int shm32read__write_file(struct b43_wldev *dev, + const char *buf, size_t count) +{ + unsigned int routing, addr; + int res; + + res = sscanf(buf, "0x%X 0x%X", &routing, &addr); + if (res != 2) + return -EINVAL; + if (routing > B43_MAX_SHM_ROUTING) + return -EADDRNOTAVAIL; + if (addr > B43_MAX_SHM_ADDR) + return -EADDRNOTAVAIL; + if (routing == B43_SHM_SHARED) { + if ((addr % 2) != 0) + return -EADDRNOTAVAIL; + } + + dev->dfsentry->shm32read_routing_next = routing; + dev->dfsentry->shm32read_addr_next = addr; + + return 0; +} + +static int shm32write__write_file(struct b43_wldev *dev, + const char *buf, size_t count) +{ + unsigned int routing, addr, mask, set; + u32 val; + int res; + unsigned long flags; + + res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X", + &routing, &addr, &mask, &set); + if (res != 4) + return -EINVAL; + if (routing > B43_MAX_SHM_ROUTING) + return -EADDRNOTAVAIL; + if (addr > B43_MAX_SHM_ADDR) + return -EADDRNOTAVAIL; + if (routing == B43_SHM_SHARED) { + if ((addr % 2) != 0) + return -EADDRNOTAVAIL; + } + if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF)) + return -E2BIG; + + spin_lock_irqsave(&dev->wl->shm_lock, flags); + if (mask == 0) + val = 0; + else + val = __b43_shm_read32(dev, routing, addr); + val &= mask; + val |= set; + __b43_shm_write32(dev, routing, addr, val); + spin_unlock_irqrestore(&dev->wl->shm_lock, flags); + + return 0; +} + /* The biggest MMIO address that we allow access to from the debugfs files. */ #define B43_MAX_MMIO_ACCESS (0xF00 - 1) @@ -605,6 +767,10 @@ out_unlock: .take_irqlock = _take_irqlock, \ } +B43_DEBUGFS_FOPS(shm16read, shm16read__read_file, shm16read__write_file, 1); +B43_DEBUGFS_FOPS(shm16write, NULL, shm16write__write_file, 1); +B43_DEBUGFS_FOPS(shm32read, shm32read__read_file, shm32read__write_file, 1); +B43_DEBUGFS_FOPS(shm32write, NULL, shm32write__write_file, 1); B43_DEBUGFS_FOPS(mmio16read, mmio16read__read_file, mmio16read__write_file, 1); B43_DEBUGFS_FOPS(mmio16write, NULL, mmio16write__write_file, 1); B43_DEBUGFS_FOPS(mmio32read, mmio32read__read_file, mmio32read__write_file, 1); @@ -699,6 +865,10 @@ void b43_debugfs_add_device(struct b43_wldev *dev) e->mmio16read_next = 0xFFFF; /* invalid address */ e->mmio32read_next = 0xFFFF; /* invalid address */ + e->shm16read_routing_next = 0xFFFFFFFF; /* invalid routing */ + e->shm16read_addr_next = 0xFFFFFFFF; /* invalid address */ + e->shm32read_routing_next = 0xFFFFFFFF; /* invalid routing */ + e->shm32read_addr_next = 0xFFFFFFFF; /* invalid address */ #define ADD_FILE(name, mode) \ do { \ @@ -712,6 +882,10 @@ void b43_debugfs_add_device(struct b43_wldev *dev) } while (0) + ADD_FILE(shm16read, 0600); + ADD_FILE(shm16write, 0200); + ADD_FILE(shm32read, 0600); + ADD_FILE(shm32write, 0200); ADD_FILE(mmio16read, 0600); ADD_FILE(mmio16write, 0200); ADD_FILE(mmio32read, 0600); @@ -740,6 +914,10 @@ void b43_debugfs_remove_device(struct b43_wldev *dev) return; b43_remove_dynamic_debug(dev); + debugfs_remove(e->file_shm16read.dentry); + debugfs_remove(e->file_shm16write.dentry); + debugfs_remove(e->file_shm32read.dentry); + debugfs_remove(e->file_shm32write.dentry); debugfs_remove(e->file_mmio16read.dentry); debugfs_remove(e->file_mmio16write.dentry); debugfs_remove(e->file_mmio32read.dentry); |